27-11-2012, 04:55 PM
IMAQ-VISION
IMAQ-VISION.pptx (Size: 224.89 KB / Downloads: 31)
Input and Output Combinations
Depending on the type of function a VI performs, different combinations of input and output are possible. We can use this flexibility to decide which image to process and where to store the resulting image
Image Analysis
Image Masks
Image Filling
Image Processing
Arithmetic and Logical Operations
Acquire or Read an Image
Acquire a single image using the IMAQ Snap VI (Image Acquisition). When you call this VI, it initializes the IMAQ device and acquires the next incoming video frame. Use this VI for single capture applications where ease of programming is essential.
Use the IMAQ ReadFile VI (Vision Utilities»Files) to open and read data from a file stored on your computer into the image reference.
You can read from image files stored in a standard format—such as BMP, TIFF, JPEG, PNG, and AIPD—or a nonstandard format you specify.
Display an Image
You can display images in LabVIEW using two methods.
If we use LabVIEW 6.x, you can display an image in an external window using the external display VIs on the External Display function palette.
If we use LabVIEW 7.0 or later, you can use the above method or display an image directly on the front panel using the Image Display control on the Vision control palette.
Display an image in an external window using the IMAQ WindDraw VI (Vision Utilities»Display). You can display images in 16 different external windows. Use the IMAQ WindSetup VI (Vision Utilities»Display) to configure the appearance of each external window.
Image Display Control
Use the Image Display control to display an image on the LabVIEW front panel. We can access the Image Display control by right-clicking the front panel and selecting Vision.
Display Area
Image Information Indicator
ROI Tools Palette
Scrollbars